renamed games folder to entries folder (also contained frameworks, libraries, ...) and added to the backlog

entries/allegro.md

@@ -0,0 +1,17 @@
+# Allegro
+
+_Cross-platform library mainly aimed at video game and multimedia programming._
+
+- Home: http://liballeg.org/
+- Media: https://en.wikipedia.org/wiki/Allegro_(software)
+- State: mature
+- Download: http://liballeg.org/download.html
+- Keywords: framework
+- Code repository: https://github.com/liballeg/allegro5.git
+- Code language: C
+- Code license: zlib
+
+## Building
+
+- Build system: CMake
+